Summary

The Tembrica BPM and Key Finder is a free online tool for detecting tempo (BPM), key, Camelot notation, time signature, and other audio features of songs. It is primarily aimed at DJs and musicians to facilitate song analysis for harmonic mixing and music production.

Functions and Features

• Automatic detection of BPM, key, Camelot notation, time signature (4/4, 3/4, 6/8, 2/4), and energy of a track
• Supports numerous audio formats that can be decoded by the browser (MP3, WAV, FLAC, OGG, AAC, etc.)
• Interactive Camelot wheel to display harmonically compatible keys for seamless DJ mixing
• Batch analysis mode for up to 20 files with table view and CSV export for DJ software (Rekordbox, Serato, Traktor)
• Tap tempo function for manual BPM detection by rhythmic tapping
• Immediate analysis without queue, no registration or limitations

Special Features

Time signature detection is rare among online tools and particularly noteworthy. The tool uses a multi-resolution autocorrelation with spectral band weighting for reliable tempo analysis. Additionally, the Camelot wheel provides enhanced harmonic orientation for DJs.

Suitable For

The BPM and Key Finder is especially suitable for musicians, producers, and audio engineers who need tempo and key information quickly and easily, for example for DJ sets or music productions.